Colbert and Warmbold

The Colbert and Warmbold is a gold mine located in Alaska.

About the MRDS Data:

All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.

Mine Info

Satelite View

MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.

Site Name

Primary: Colbert and Warmbold

Commodity

Primary: Gold

Location

State: Alaska
District: Fairbanks

Land Status

Not available

Holdings

Not available

Workings

Not available

Ownership

Not available

Production

Not available

Deposit

Record Type: Site
Operation Category: Occurrence
Operation Type: Unknown
Years of Production:
Organization:
Significant:

Physiography

Not available

Mineral Deposit Model

Not available

Orebody

Not available

Structure

Not available

Alterations

Alteration Type: L
Alteration Text: Iron oxide stains.

Rocks

Not available

Analytical Data

Not available

Materials

Ore: Gold

Comments

Comment (Reference): Primary Reference = Pilgrim, 1933

Comment (Workings): Workings / Exploration = In October, 1932, an adit was driven to intersect three quartz-bearing shear zones previously found on the surface. In early February, 1933 the adit had been driven a distance of 550 feet (Pilgrim, 1933). Mineralized zones were encountered at the 175 foot, 240 foot, and 380 foot stations (Pilgrim, 1933).

Comment (Deposit): Model Name = Gold-quartz vein.

Comment (Geology): Geologic Description = This occurrence consists of small gold-bearing quartz veins in schist; the veins strike N 50 W and dip 28 S (Chapman and Foster, 1969). In October, 1932, an adit was driven to intersect three quartz-bearing shear zones previously found on the surface. In early February, 1933, the adit had been driven a distance of 550 feet (Pilgrim, 1933). At the 175 foot station of the adit, a one-inch-thick quartz veinlet was intersected. This stringer zone strikes N 48 W and dips 53 SW and carried a small amount of free gold. The adit intersects a second mineralized zone at the 240 foot station. This shear zone consists of barren brecciated schist and gouge. At the 380 foot station, the adit intersected a shear zone trending N 60 W and dipping 28 SW (Pilgrim, 1933; Stewart, 1933). This shear zone dips 45 SW at the surface. The shear contains a 5-inch-thick crushed quartz stockwork zone containing abundant free gold. The zone was iron-oxide stained and contained no visible sulfides.

Comment (Exploration): Status = Inactive

References

Reference (Deposit): Cobb, E.H., 1976, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Livengood quadrangle, Alaska: U.S. Geological Survey Open-File Report 76-819, 241 p.

Reference (Deposit): Cobb, E.H., 1972, Metallic mineral resources map of the Livengood quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-413, 2 sheets, scale 1:250,000.

Reference (Deposit): Chapman, R.M., and Foster, R.L., 1969, Lode mines and prospects in the Fairbanks district, Alaska: U.S. Geological Survey Professional Paper 625-D, 25 p., 1 plate.

Reference (Deposit): Freeman, C.J., 1992, 1991 Golden Summit project final report, volume 2: Historical summary of lode mines and prospects in the Golden Summit project area, Alaska: Avalon Development Corp., 159 p. (Report held by Freegold Recovery Inc. USA, Vancouver, British Columbia.)

Reference (Deposit): Stewart, B.D., 1933, Mining investigations and mine inspection in Alaska, Biennium ending March 31, 1933: Alaska Territorial Department of Mines Annual Report 1933B, 196 p.

Reference (Deposit): Pilgrim, E.R., 1933, Progress of lode mining in interior Alaska, 1932: Alaska Territorial Department of Mines Miscellaneous Report 194, 11 p.

Reference (Deposit): Cobb, E.H., 1976, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Circle quadrangle, Alaska: U.S. Geological Survey Open-File Report 76-633, 72 p.

The Top Ten Gold Producing States

These ten states contributed the most to the gold production that built the West from 1848 through the 1930s. The Top Ten Gold Producing States.